前端：
<form method="post" enctype="multipart/form-data" id="formSubmit">
<div class="row">
<div class="col-lg-12" style="padding-left:25px;padding-top: 5px">
<label>请选择文件</label>
<input type="file" name="file" title="点击选择文件" multiple="" accept="*/*" class="form-control">
</div>
</div>
<div class="row">
<div style="padding-left:25px;padding-top:10px">
<input type="submit" class="btn btn-primary">
</div>
</div>
</form>
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JS：$('#formSubmit').submit(function (event) {
//首先验证文件格式
var fileName = $(this).find("input[name=file]").val();
if (fileName === '') {
alert('请选择文件');
return;
}
// mulitipart form,如文件上传类
var formData = new FormData(this);
$.ajax({
async: false,
type: "POST",
url: "/upload",
data: formData,
dataType: "JSON",
mimeType: "multipart/form-data",
contentType: false,
cache: false,
processData: false,
success: function (data) {
if (data.success) {
layer.alert("上传成功")
} else {
layer.alert(data.error)
}
}
});
return false;
});
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js代码的最后需要return false 防止表单重复提交，刷新页面。
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java: @RequestMapping(value = "/upload", method = RequestMethod.POST, produces = "application/json;charset=utf-8")
@ResponseBody
public SimpleAjaxResponse uploadSingleFile(HttpServletRequest request, Model model) {
try {
DefaultMultipartHttpServletRequest httpServletRequest = (DefaultMultipartHttpServletRequest) request;
MultipartFile multipartFile = httpServletRequest.getFile("file");
return new SimpleAjaxResponse(true);
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
e.printStackTrace();
return new SimpleAjaxResponse("上传出错了");
}
}
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